Desertification is the degradation of land into arid (desert) areas. Caused primarily by human activities and climatic variations, desertification is on the move. We loose fertile land and nature's biodiversity at an alarming rate.
The Sahara is expanding south at an average rate of 30 miles per year. In Nigeria desertification overtakes about 1,355 square miles (3,510 km²) of land per year. More than 80% of Afghanistan's land is subject to soil erosion and desertification. In Kazakhstan, nearly half of the cropland turned intow wasteland since 1980. (Source)
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Picture courtesy Reuters (Der Spiegel)